.header {
    width: 100%;
    display: flex;
    margin: 0px auto;
    height: 55px;
    padding: 0px 10px;
    justify-content: space-between;
    border-bottom: 1px solid #efefef;
    background: #2db7f5;
    color: #fff;
    .item {
        display: -webkit-box;
        justify-content: center;
        line-height: 60px;
        .col {
            margin-right: 20px;
            line-height: 20px;
        }
    }
    .left {
        line-height: 50px;
        font-size: 23px;
        cursor: pointer;
        i {
            font-size: 30px;
            cursor: pointer;
        }
    }
}